RDK-249 Power Integrations, RDK-249 Datasheet

KIT REF DESIGN PFS762HG

RDK-249

Manufacturer Part Number
RDK-249
Description
KIT REF DESIGN PFS762HG
Manufacturer
Power Integrations
Series
HiperTFS®r
Datasheets

Specifications of RDK-249

Main Purpose
Reference Design, PC Power Supply
Embedded
No
Utilized Ic / Part
TFS762HG
Primary Attributes
12V 25A, 5V 2.9A Outputs, 300 ~ 385 VDC Input
Output Voltage
5 V
Input / Supply Voltage (max)
385 VDC
Input / Supply Voltage (min)
300 VDC
Duty Cycle (max)
50 %
Mounting Style
Through Hole
Output Current
2.9 A
Output Power
14.5 W
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Other names
596-1398
Summary and Features
PATENT INFORMATION
The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered
by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A
complete list of Power Integrations' patents may be found at www.powerint.com. Power Integrations grants its customers a license under
certain patent rights as set forth at <http://www.powerint.com/ip.htm>.
Title
Specification
Application
Author
Document
Number
Date
Revision
 High efficiency Main and Standby converters
 Remote on/off
 Built-in main and standby undervoltage thresholds protection ensures graceful
 Latching output overvoltage protection
 Integrated high-side driver
 Output short-circuit and open loop protection
 Main transformer reset protection
 Flat standby overload versus input voltage
power supply start-up and shutdown
Reference Design Report for 14.5 W Standby
and 300 W Main Power Supply Using
HiperTFS
300 VDC – 385 VDC Input; 5 V, 2.9 A (Standby)
and 12 V, 25 A (Main) Outputs
PC Power Supply
Applications Engineering Department
RDR-249
November 9, 2010
1.0
5245 Hellyer Avenue, San Jose, CA 95138 USA.
Tel: +1 408 414 9200 Fax: +1 408 414 9201
Power Integrations
www.powerint.com
TFS762HG

Related parts for RDK-249

RDK-249 Summary of contents

Page 1

... The products and applications illustrated herein (including transformer construction and circuits external to the products) may be covered by one or more U.S. and foreign patents, or potentially by pending U.S. and foreign patent applications assigned to Power Integrations. A complete list of Power Integrations' patents may be found at www.powerint.com. Power Integrations grants its customers a license under certain patent rights as set forth at < ...

Page 2

... Main Drain Voltage and Current, Normal Operation, Full Power .......................35 13.2 Standby Drain Voltage and Current, Normal Operation, Full Power..................36 13.3 Standby Drain Current and Output Voltage Start-Up Profile..............................37 Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page ...

Page 3

... Although this board is designed to satisfy safety isolation requirements, the engineering prototype has not been agency approved. Therefore, all testing should be performed using an AC isolation transformer to the DC power supply or power factor stage used to provide the input voltage. Page Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com ...

Page 4

... VDC input rectifier stage is required supply to the input for evaluation also possible to use the power factor circuit RDK-236 to provide the regulated 385 VDC needed to power RDK-249. Typically PC power supplies have a universal AC input power factor corrected (PFC) input stage but as the bias standby supply must operate before the PFC stage is active, the Standby output must operate with the DC equivalent of universal AC input voltages (85 VAC to 265 VAC and 100 VDC to 400 VDC) ...

Page 5

... A 10 MHz bandwidth W For Standby only W For Main12 V only W For both Main and Standby W For both Main and Standby ms For P OUT3 % 100% Load % 100% Load o C Forced cooling, sea level o C with forced cooling Power Integrations www.powerint.com ...

Page 6

... Schematic Missing from this schematic are any mechanical/assembly part like mounting holes, screws, heat-sing brackets etc. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 2 – Schematic. Page ...

Page 7

... R16 is selected to maintain the minimum 700 A required into BP pin to inhibit the internal HiperTFS high voltage current source and thus reduce no-load consumption. Capacitor C12 connected to the BP pin of U6 provides decoupling for the internally Page Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com ...

Page 8

... L1, during the Main off- time. Inductor L1 together with capacitors C10 and C11 form an output filter out switching output ripple and noise. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com ...

Page 9

... HiperTFS and the device stops switching, protecting the output. The latching condition disables switching until the latch is reset with source current into the L pin below 10 A. Page Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com ...

Page 10

... PCB Layout Figure 3 – Printed Circuit Layout, Bottom Side. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Page ...

Page 11

... Figure 4 – Printed Circuit Layout, Top Side. Page Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com ...

Page 12

... FUSEHOLDER OPEN MNT 6.3 A, 250 V, Fast mm, Cartridge Thermal Grease, Silicone Tube Bracket, Heatsink, Right Bracket, Heatsink, Left HEATSINK PAD, TO-220, Sil-Pad 1000 HEATSINK, RDK249-Diode-Hsink, Alum 5052, 3.00" 1.650" 0.187" Thk Mfg Part Number Mfg EET-ED2W271EA Panasonic NCD332M1KVZ5U NIC Components ...

Page 13

... R27 71 1 R28 72 2 R30 R33 Page HEATSINK, RDK249-eSIP-Hsink, Alum 5052, 3.00" 1.650" 0.125" Thk 2 Position ( header, 10.16 mm (0.400) pitch, Vertical 2 Position ( header, 10.16 mm (0.400) pitch, Vertical 2 Position ( header (0.196) pitch, Vertical CONN HEADER 3POS (1x3).156 VERT TIN 2 Position ( header, 0.1 pitch, Vertical Wire Jumper, Insulated, 22 AWG, 0 ...

Page 14

... WASHER WASHER WASHER 6, 7 Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 4.75 k, 1%, 1/16 W, Thick Film, 0603 4.7 k, 5%, 1/4 W, Thick Film, 1206 Rivet, Al, .093 Dia x 0.187 (3/16) L, 100 Deg Countersunk, soft, 1100-F Aluminum Rivet, Al, .093 Dia x 0.250 (1/4) L, 100 ...

Page 15

... Magnet wire: #20 AWG Triple Insulated Wire [5] Tape: 3M 1298 Polyester Film, 2 mils thick, 10.8 mm wide [6] Varnish [7] Page Figure 5 – Transformer Electrical Diagram. Description Tel: +1 408 414 9200 Fax: +1 408 414 9201 3000 VAC 850 H, 10%  2.15 MHz Min 18 H Max Power Integrations www.powerint.com ...

Page 16

... Insulation Assemble, grind the cores to get 2.15 mH and secure with tape. Varnish [7] Finish Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 6 – Transformer Build Diagram. Page ...

Page 17

... Pins 2-6, all other open, measured at 50 kHz, 0.4 V RMS Pins 2-6, all other open Pins 2-6, with pins 8-14 shorted, measured at 50 kHz, 0.4 V RMS Description Tel: +1 408 414 9200 Fax: +1 408 414 9201 3000 VAC 23 mH, 25% 200 kHz (Min.) 25 H (Max.) Power Integrations www.powerint.com ...

Page 18

... Transformer Build Diagram 4 x #20AWG 9.0mm Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 8 – Transformer Build Diagram. Outer tape item[7] Copper Foil tape item[5] 425.0mm Figure 9 – Copper Foil Preparation #20AWG 24.0mm 36.0mm 9.0mm ...

Page 19

... Start at pin 4, wind 44 turns of wire item [3] from left to right and right to left in 1 WD4: 2 Half ½ layers and terminate at pin 6 Primary 2 layers of tape item [6] Insulation Assemble and secure the cores with tape. Varnish item [7] Finish Page Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com ...

Page 20

... Start with FL1, FL2, FL3, FL4, end with FL5, FL6, FL7, FL8, and leave ~ ½” long.  Tin all leads ~½” 9.5 Inductor Illustrations Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 10 – Inductor Electrical Diagram. ...

Page 21

... Transformer Design Spreadsheet (Note – Output current is made 4. the spreadsheet to account for load on the auxiliary output) HiperTFS_Two- switch_Forward_092110 ; Rev.1.04; Copyright Power Integrations 2010 INPUT HiperTFS MAIN OUTPUT (TWO-SWITCH FORWARD STAGE) OUTPUT VOLTAGE AND CURRENT VMAIN 12.00 IMAIN 25.00 VOUT2 IOUT2 POST REGULATED OUTPUT ...

Page 22

... VBIAS_ACTUAL TRANSFORMER DESIGN PARAMETERS NP BM_MAX BM PK-PK BP_MAX BP PK-PK LP MIN IMAG OD_P AWG_P DUTY CYCLE VALUES (REGULATION) DVMIN DVNOM DVMAX Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 70500 Hz 1.0 232.0 k-ohms 3.25 A 3.05 ohms 0.45 5.28 V 150.00 V 570 ...

Page 23

... Total number of layers for chosen toroid 25.0 A RMS current through main inductor windings 0.0 A RMS current through aux winding 15.0 AWG Main inductor winidng wire gauge 1.5 mm Main winding wire gauge outer diameter Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com ...

Page 24

... VO_SB 5.00 IO_SB 2.00 IO_SB_PK 2.90 POUT_SB POUT_SB_TOTAL POUT_SB_PK Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 2.0 Number of parallel strands for main output 4.3 mohm Reisstance of wire for main inductor winding Ratio of total resistance (AC + DC) to the DC 4 ...

Page 25

... Minimum DC Input Voltage Maximum DC Input Voltage Duty Ratio at full load, minimum primary inductance and minimum input voltage Average Primary Current Minimum Peak Primary Current Primary Ripple Current Primary RMS Current Typical Primary Inductance. +/- 10% to ensure a minimum primary inductance of 765 uH Power Integrations www.powerint.com ...

Page 26

... TRANSFORMER SECONDARY DESIGN PARAMETERS Lumped parameters ISP ISRMS IRIPPLE CMS AWGS VOLTAGE STRESS PARAMETERS VDRAIN PIVS Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 10 % Primary inductance tolerance 49 Primary Winding Number of Turns 349 nH/T^2 Gapped Core Effective Inductance Maximum Operating Flux Density, BM< ...

Page 27

... VDC input. For standby measurements, DC input voltage vas adjusted to match the equivalent AC voltage. 11.1 Main and Standby Efficiency Figure 11 – Main and Standby Efficiency [%], Room Temperature, Forced Cooling. Page Output Power Level (%) Tel: +1 408 414 9200 Fax: +1 408 414 9201 100 Power Integrations www.powerint.com ...

Page 28

... Figure 12 – Full Power Standby Efficiency [%] vs. AC Input Voltage [V] at Room Temperature Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 145 160 175 190 205 Equivalent AC Input Voltage (V) 220 ...

Page 29

... Figure 13 – Standby Efficiency [%], at Room Temperature and Equivalent AC Input Voltage. Page Standby Output Power (%) Tel: +1 408 414 9200 Fax: +1 408 414 9201 Efficiency for 90 VAC Efficiency for 115 VAC Efficiency for 230 VAC Efficiency for 265 VAC 100 Power Integrations www.powerint.com ...

Page 30

... Figure 14 – Input Power [mW] vs. Input Line Voltage [V], for Zero Standby Load at Room Temperature. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 145 160 175 190 205 Equivalent AC Input Voltage (V) 220 ...

Page 31

... Figure 15 – Main Load Regulation, at Room Temperature and 380 VDC Input Voltage. Page 7.5 10.0 12.5 15.0 Standby Output Current (A) Tel: +1 408 414 9200 Fax: +1 408 414 9201 Main Regulation 17.5 20.0 22.5 25.0 Power Integrations www.powerint.com 27.5 ...

Page 32

... Figure 16 – Standby Load Regulation, at Room Temperature and Equivalent AC Input Voltage. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com 0.8 1.0 1.3 1.5 1.8 Standby Output Current (A) Regulation at 90 VAC ...

Page 33

... Figure 17 – Line Regulation, at Room Temperature, Full Load. Page 145 160 175 190 205 Equivalent AC Input Voltage (V) Tel: +1 408 414 9200 Fax: +1 408 414 9201 220 235 250 265 280 Power Integrations www.powerint.com ...

Page 34

... In case of power components replacement it is important to insure a clean and smooth surfaces for heat-sink mechanical assembly with thermal conductive grease between any surface in contact, even for the isolation pad. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 19 – Board Thermal Image. ...

Page 35

... Figure 21 – Input Voltage: 380 VDC , Upper: Main Upper MOSFET (Red) V SOURCE 100 V / div. , Upper: Main Lower MOSFET (Gold) V DRAIN 100 V / div. Lower: Main I Power Integrations Tel: +1 408 414 9200 Fax: +1 408 414 9201 SOURCE , DRAIN , 500 mA, 2 s / div. DRAIN www.powerint.com , ...

Page 36

... Lower: Standby I DRAIN Figure 24 – Input Voltage: 127 VDC , div., 10 s / div. Standby V DRAIN Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 23 – Input Voltage: 380 VDC , div. , 120 mA, 1 s / div. Figure 25 – 380 VDC Upper: Standby V , 100 V / div ...

Page 37

... Figure 27 – Full Load: 380 VDC Input Voltage. , 200 mA div. Figure 29 – No-load at 380 VDC Input Voltage , 200 mA div. Tel: +1 408 414 9200 Fax: +1 408 414 9201 Upper div. STBY Lower: Standby I , 200 mA div. DRAIN Upper div. STBY Lower: Standby I , 200 mA div. DRAIN Power Integrations www.powerint.com ...

Page 38

... For this test the DC input voltage was applied with remote-ON/OFF switch in ON position. 13.5 Main Output Voltage Remote-ON Start-Up Profile Figure 31 – No-load: 380 VDC Input Voltage. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Upper (red div ...

Page 39

... Upper (red div. STBY Upper (yellow): V MAIN Lower: Standby I DRAIN Page Figure 33 – Main OV Protection div. , 200 mA div. Tel: +1 408 414 9200 Fax: +1 408 414 9201 Upper (red div. STBY Upper (yellow div. MAIN Lower: Main I , 750 mA div. DRAIN Power Integrations www.powerint.com ...

Page 40

... Standby Auto-Restart Figure 35 – Maximum Hold-Up Time = 22.3 ms Overloading the standby output with 6 A for 380 VDC input shows repeated restart attempts every 2.3 s followed by a quick shutdown. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Upper (yellow div ...

Page 41

... Figure 37 – Standby Output Short-Circuit. , 200 mA, 50 s / div. Figure 39 – Main Output Short-Circuit. Tel: +1 408 414 9200 Fax: +1 408 414 9201 Upper div. STBY Lower: Standby I , 200 mA, 100 ms / div. DRAIN Upper div. MAIN Lower: Main I , 750 mA, 100 ms / div. DRAIN Power Integrations www.powerint.com ...

Page 42

... ON state and Main 12 V output reaching 11.5 V, and it is 28.5 ms. Main Remote-OFF shut-down time is measured from Remote-ON/OFF signal going in OFF state and Main 12 V output going down to 11.5 V, and it is 265 s. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 41 – ...

Page 43

... Figure 43 – Oscilloscope Probe with Probe Master 5125BA BNC Adapter. (Modified for ripple measurement, and two parallel decoupling capacitors added) Page (End Cap and Ground Lead Removed) Tel: +1 408 414 9200 Fax: +1 408 414 9201 Probe Ground Probe Tip Power Integrations www.powerint.com ...

Page 44

... V STBY Load) Figure 46 – Main Output Ripple: 380 VDC , div., 5 s / div. (Full V MAIN Load) Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com Figure 45 – Standby Output Ripple: 380 VDC div div. (Full STBY Load) Figure 47 – Main Output Ripple: 380 VDC div ...

Page 45

... Figure 48 – Standby Step Load: 380 VDC Upper div. STBY Lower: Standby I OUT Page Figure 49 – Main Step Load: 380 VDC , 300 mA, 2ms / div. Tel: +1 408 414 9200 Fax: +1 408 414 9201 Upper div. MAIN Lower: Main div. OUT Power Integrations www.powerint.com ...

Page 46

... For convenience, two LED footprints are provided for optional visual control. All no-load tests must be completed without LEDs. 3. J1_OPTIO it is provided at schematic and BOM level as an alternative option only. Power Integrations, Inc. Tel: +1 408 414 9200 Fax: +1 408 414 9201 www.powerint.com ...

Page 47

... Revision History Date Author 09-Nov-10 AN Page Revision Description and changes 1.0 Initial Release Tel: +1 408 414 9200 Fax: +1 408 414 9201 Reviewed Apps & Mktg Power Integrations www.powerint.com ...

Page 48

... Power Integrations reserves the right to make changes to its products at any time to improve reliability or manufacturability. Power Integrations does not assume any liability arising from the use of any device or circuit described herein. POWER INTEGRATIONS MAKES NO WARRANTY HEREIN AND SPECIFICALLY DISCLAIMS ALL WARRANTIES INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS ...

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